Effect of P/Bi substitution on optical and thermal properties of Ga-Ge-Se-Te glasses

R. Golovchak (1) , M.J. J Seage (1) , J. Szlęzak (2, 3) , Y. Shpotyuk (3) , D. Płoch (3) , François Cheviré (2) , C. Boussard-Plédel (2) , Bruno Bureau (2)

1 Austin Peay State University
2 ISCR - Institut des Sciences Chimiques de Rennes
3 Institute of Physics

Novel P-containing bulk Bi_xGa₅Ge₂₀P_10-xSe₄₅Te₂₀ glasses have been successfully fabricated and studied with optical spectroscopy and differential scanning calorimetry. Non-isothermal and isothermal crystallization kinetics are investigated, and anti-Arrhenius behavior is observed for the crystallization of some phases in x = 1 glass. The thermal stability of the glass is shown to decrease with an increase in Bi concentration, whereas as the concentration of P increases, the glass stability increases and the glass does not crystallize during regular DSC heating scans. It is found that substitution of P with Bi in glass composition leads to a decrease in the optical gap and increase in its density.

Mots clés: Chalcogenide glass; Crystallization; Kinetics; DSC; Optical properties

Domaines: Matériaux

R. Golovchak, M.J. J Seage, J. Szlęzak, Y. Shpotyuk, D. Płoch, et al.. Effect of P/Bi substitution on optical and thermal properties of Ga-Ge-Se-Te glasses. Journal of Alloys and Compounds, 2020, 835, pp.155224. ⟨10.1016/j.jallcom.2020.155224⟩. ⟨hal-02554030⟩